GPT-5.4 nano

Cheapest GPT-5.4 lane for simple routing, extraction, and bulk automation

ECI STANDING#71 of 266
SCORE145.85143.7–147.77 CI
FRONTIER LAGLaunched 11.0 months behindScores about what o3 did in April 2025.
Full Epoch Capabilities Index ranking
RELEASE DATEMar 17, 2026
WEIGHTSClosed weights
CONTEXT WINDOW400K
MAX OUTPUT128K
REASONINGYes
TOOL CALLINGYes
INPUTStext, image
OUTPUTStext

Specifications from Models.dev. Availability and limits may differ by provider. Benchmark scores come from Epoch AI under CC BY 4.0.